Report Abuse. Its gotta be A because ADH helps the kidney conserve the water but not salt. It is secreted by the posterior pituitary, not the kidney. ADH conserves body water by decreasing urine production. ADH causes the kidneys to return more water to the blood and this has the effect of decreasing urine volume.ts gotta be A because ADH helps the kidney conserve the water but not salt. It is secreted by the posterior pituitary, not the kidney. ADH conserves body water by decreasing urine production.
Nucleic acids are polymers of individual nucleotide monomers. Each nucleotide is composed of three parts: a 5-carbon sugar, a phosphate group, and a nitrogenous base. Only two 5-carbon sugars are found in nature: ribose and deoxyribose.
1 Nitrogen is an essential element of all amino acids. 2  Amino acids are the building blocks of proteins. 3  Nitrogen is also a component of nucleic acids, which form the DNA of all living things and holds the genetic code. 4  Nitrogen is a component of chlorophyll, which is the site of carbohydrate formation (photosynthesis).